*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    margin: 5px 10px;
}
.call-btn {
    height: 35px;
    padding: 10px 20px;
    border-radius: 5px;
    width: 100%;
    border: none;
    background-color: rgb(0, 180, 0);
    color: white;
    transition: transform 0.1s ease;
}

.call-btn:active {
    transform: scale(0.98);
    background-color: rgb(0, 160, 0); 
}